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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.loganalysis.item;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
/**
* An {@link IItem} used to cpuinfo.
*/
public class CpuInfoItem implements IItem {
/** Constant for JSON output */
public static final String PROCESSES_KEY = "processes";
/** Constant for JSON output */
public static final String PID_KEY = "pid";
/** Constant for JSON output */
public static final String PERCENT_KEY = "percent";
/** Constant for JSON output */
public static final String NAME_KEY = "name";
private Map<Integer, Row> mRows = new HashMap<Integer, Row>();
private static class Row {
public double percent;
public String name;
}
/**
* {@inheritDoc}
*/
@Override
public IItem merge(IItem other) throws ConflictingItemException {
throw new ConflictingItemException("CpuInfo items cannot be merged");
}
/**
* {@inheritDoc}
*/
@Override
public boolean isConsistent(IItem other) {
return false;
}
/**
* {@inheritDoc}
*/
@Override
public JSONObject toJson() {
JSONObject object = new JSONObject();
JSONArray processes = new JSONArray();
for (int pid : getPids()) {
JSONObject proc = new JSONObject();
try {
proc.put(PID_KEY, pid);
proc.put(PERCENT_KEY, getPercent(pid));
proc.put(NAME_KEY, getName(pid));
processes.put(proc);
} catch (JSONException e) {
// ignore
}
}
try {
object.put(PROCESSES_KEY, processes);
} catch (JSONException e) {
// ignore
}
return object;
}
/**
* Get a set of PIDs seen in the cpuinfo output.
*/
public Set<Integer> getPids() {
return mRows.keySet();
}
/**
* Add a row from the cpuinfo output to the {@link CpuInfoItem}.
*
* @param pid The PID from the output
* @param percent The percentage of CPU usage by the process
* @param name The process name
*/
public void addRow(int pid, double percent, String name) {
Row row = new Row();
row.percent = percent;
row.name = name;
mRows.put(pid, row);
}
/**
* Get the percentage of CPU usage by a given PID.
*/
public double getPercent(int pid) {
return mRows.get(pid).percent;
}
/**
* Get the process name for a given PID.
*/
public String getName(int pid) {
return mRows.get(pid).name;
}
}
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